![]() Our observations support the hybrid model that includesīoth fast wave and slow non-wave components. Magnetosonic wave or shock driven by the associated CME, which propagatedįaster than the ambient fast-mode speed and gradually slowed down to an Diffraction is the bending of light as it passes around the edge of an object or through a slit.Refraction is the bending of a wave when it enters a medium w. Diffraction Which of the above properties are common to all. A wave entering a medium at an angle will. Which represents the initiation of the associated coronal mass ejection (CME).īased on these results, we conclude that the EUV wave should be a nonlinear Reflection, Refraction, and Diffraction Refraction occurs when a wave crosses a boundary from one medium to another. Group of expanding loops a few minutes after the start of the loops' expansion, For the origin of the EUV wave, we find that it formed ahead of a Propose that the different behaviors observed during the interactions mayĬaused by different speed gradients at the boundaries of the two active We contribute to the debate on the identification of phase scintillation induced by the ionosphere on the global navigation satellite system (GNSS) by introducing a phase detrending method able to provide realistic values of the phase scintillation index at high latitude. The formation of the new wavefront and the transmissionĬould be explained with diffraction and refraction effects, respectively. The refractive index is used in (not defined by) Snell's law, which relates the angle of incidence to the angle of refraction when light passes from one material into. ![]() where c is speed of light in vaccum, and v is velocity of light in the material. ![]() The wave approached AR11459, it transmitted through the active region directlyĪnd without reflection. The refractive index tells you the speed of light in a given material. Reflected wave was also observed simultaneously on the wave incoming side. The active region, but a few minutes latter a new wavefront appeared behind theĪctive region, and it was not concentric with the incoming wave. When the wave approached AR11465, it became weaker and finally disappeared in Intriguing phenomena are observed when the wave interacts with two remoteĪctive regions, and they together exhibit the wave property of this EUV wave. Global extreme-ultraviolet (EUV) wave propagating in the solar corona. Download a PDF of the paper titled Diffraction, Refraction, and Reflection of An Extreme-Ultraviolet Wave Observed during Its Interactions with Remote Active Regions, by Yuandeng Shen and 7 other authors Download PDF Abstract: We present observations of the diffraction, refraction, and reflection of a
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